<template>
	<view>
		<view class="uni-list list-pd">
			<view class="uni-list-cell cell-pd">
				<view class="uni-uploader">
					<view class="uni-uploader-head">
						<view class="uni-uploader-title">点击可预览选好的图片</view>
						<view class="uni-uploader-info">{{imageList.length}}/9</view>
					</view>
					<view class="uni-uploader-body">
						<view class="uni-uploader__files">
							<block v-for="(image,index) in imageList" :key="index">
								<view class="uni-uploader__file">
									<view class="iconfont icon-delete" @tap="delImg(index)"></view>
									<image class="uni-uploader__img" :src="image" :data-src="image" @tap="previewImage"></image>
								</view>
							</block>
							<view class="uni-uploader__input-box">
								<view class="uni-uploader__input" @tap="chooseImage"></view>
							</view>
						</view>
					</view>
				</view>
			</view>
		</view>
	</view>
</template>

<script>
	import permision from "@/common/permission.js"
	let sourceType = [
		['camera'],
		['album'],
		['camera', 'album']
	]
	let sizeType = [
		['compressed'],
		['original'],
		['compressed', 'original']
	]
	
	export default {
		props:{
			
			imageList: {
				type: Array,
				default(){
					return []
				}
			},
			sourceTypeIndex: {
				type: Number,
				default: 2
			},
			sizeTypeIndex: {
				type: Number,
				default: 2,
			}
		},
		data() {
			return {
				// sourceType: ['拍照', '相册', '拍照或相册'],
				// sizeType: ['压缩', '原图', '压缩或原图'],
				// countIndex: 8,
				// count: [1, 2, 3, 4, 5, 6, 7, 8, 9]
			};
		},
		methods:{
			chooseImage: async function() {
				// #ifdef APP-PLUS
				// TODO 选择相机或相册时 需要弹出actionsheet，目前无法获得是相机还是相册，在失败回调中处理
				if (this.sourceTypeIndex !== 2) {
					let status = await this.checkPermission();
					if (status !== 1) {
						return;
					}
				}
				// #endif
			
				if (this.imageList.length === 9) {
					return
				}
				uni.chooseImage({
					sourceType: sourceType[this.sourceTypeIndex],
					sizeType: sizeType[this.sizeTypeIndex],
					count: 9 - this.imageList.length,
					success: (res) => {
						this.imageList.push(...res.tempFilePaths);
						this.$emit("loadImgs",this.imageList)
					},
					fail: (err) => {
						// #ifdef APP-PLUS
						if (err['code'] && err.code !== 0 && this.sourceTypeIndex === 2) {
							this.checkPermission(err.code);
						}
						// #endif
						// #ifdef MP
						uni.getSetting({
							success: (res) => {
								let authStatus = false;
								switch (this.sourceTypeIndex) {
									case 0:
										authStatus = res.authSetting['scope.camera'];
										break;
									case 1:
										authStatus = res.authSetting['scope.album'];
										break;
									case 2:
										authStatus = res.authSetting['scope.album'] && res.authSetting['scope.camera'];
										break;
									default:
										break;
								}
								if (!authStatus) {
									uni.showModal({
										title: '授权失败',
										content: '需要从您的相机或相册获取图片，请在设置界面打开相关权限',
										success: (res) => {
											if (res.confirm) {
												uni.openSetting()
											}
										}
									})
								}
							}
						})
						// #endif
					}
				})
			},
			previewImage: function(e) {
				var current = e.target.dataset.src
				uni.previewImage({
					current: current,
					urls: this.imageList
				})
			},
			delImg(index){
				this.imageList.splice(index, 1)
				this.$emit("loadImgs",this.imageList)
			},
			async checkPermission(code) {
				let type = code ? code - 1 : this.sourceTypeIndex;
				let status = permision.isIOS ? await permision.requestIOS(sourceType[type][0]) :
					await permision.requestAndroid(type === 0 ? 'android.permission.CAMERA' :
						'android.permission.READ_EXTERNAL_STORAGE');
			
				if (status === null || status === 1) {
					status = 1;
				} else {
					uni.showModal({
						content: "没有开启权限",
						confirmText: "设置",
						success: function(res) {
							if (res.confirm) {
								permision.gotoAppSetting();
							}
						}
					})
				}
			
				return status;
			}
		}
	}
</script>

<style scoped>
.cell-pd {
		padding: 22upx 30upx;
	}

	.list-pd {
		margin-top: 50upx;
	}
	
	.uni-uploader__file {
		position: relative;
	}
	
	.uni-uploader__file .icon-delete{
		position: absolute;
		z-index: 1;
		top: 0;
		right: 0;
		background-color: rgba(0,0,0,0.5);
		color: #FFFFFF;
		padding: 0 10rpx;
		border-radius: 5rpx;
	}
</style>
